M 6.21 in United States on 10 Oct 2021 21:48 UTC

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 6.2M
Depth: 35.06 Km
Event Date: 10 Oct 2021 21:48 UTC
10 Oct 2021 11:48 Local
Exposed Population: About 3000 people in MMI
20 thousand in 100km
Source: HVO hv72748782
Inserted at: 18 Oct 2021 15:39 UTC
INFORM Coping capacity of the alert score:
2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
HVO 0 0 0
hv72748782 Scaled population (raster) 0 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0m  
  C2 shakemap 0.53      
  Country Vulnerability 0      
  INFORM_normalised 0.65      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1401457 0 10 Oct 2021 21:48 6.1M, 17.1km N/A 20 thousand (in 100km) 7d 17:37 PTWC
1401462 0 10 Oct 2021 21:48 5.7M, 34.66km N/A 150 thousand (in 100km) 7d 17:36 NEIC
1401464 0 10 Oct 2021 21:48 6.21M, 35.06km 6.82 N/A (in MMI>=VII) 0m (at 00:00) 7d 17:50 HVO
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Tsunami affected locations

Alert Date (UTC) Name Country Wave height (m)

See full locations list (RSS)


Initial conditions

Title: ""27 km SSE of Naalehu""

Fault parameters

  • Latitude: 18.82
  • Longitude: -155.527
  • Length: 20 km
  • Width: 5 km
  • Magnitude: 6.2 M

Okada parameters:

  • Slip: .6 m
  • Strike: 90 (geogr angle: north=0, south=180)
  • Dip: 45 degree
  • Rake: 90 degree
  • Depth: 35 km

Calculation parameters

  • Calculation space (lon/lat): -157.027, 17.32, -154.027, 20.32
  • Instead of Step -> use Cell size:.25 minutes

Sea Level

More information

  • Timeline:
    Tsunami calculations performed to this case, click here

For a full list of available products related to this event, please refer to the GDACS Resources page.